Luminescent Glass Composition
AssigneeD. Swarovski & Co.
InventorsRoy Debbage, Rainer Haid, Helmut Judmaier, Johannes Maier, Florian Meissl, Gerold Sprachmann
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Abstract
The invention relates to faceted gemstones based on a luminescent glass composition that contains particular oxides of rare earth metals and thus enables the faceted gemstones to be identified, and to a process for identifying the gemstones.
Claims14
A faceted gemstone of glass containing at least one dopant selected from the group of oxides of the rare earth metals scandium, lanthanum, cerium, praseodymium, samarium, europium, yttrium, terbium, dysprosium, holmium, thulium, ytterbium and lutetium, characterized in that the total amount of the oxides of rare earth metals is 2-2000 mg/kg of the glass composition.
The faceted gemstone of glass according to claim 12, characterized in that said oxidic glass is selected from silicate glasses, borate glasses, and phosphate glasses.
Dependencies are inferred from the claim text.